The gsm jammer is a shielded signal device that effectively blocks all communication signals such as CDMA, GSM, SCDMA, DCS (1800MHz), PCS (1900MHz), PHS, 3G, 4G.WIFi.GPS,etc.
When phone works, within a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound are transmitted at a certain baud rate and modulation mode. The GSM blocker is scanned from the low-end frequency of the forward channel to the high-end at a certain speed. The scanning speed can form garbled interference in the signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. Mobile phones are characterized by search networks, no signals, no services, and so on.
The phone gsm blockers only blocks the mobile phone signal and does not affect the normal operation of other electronic devices. Only the mobile phone signal in the examination room is shielded, there is no interference to the mobile phone outside the examination room, and it will not interfere with the base station; only the downlink frequency of the transmitting base station is shielded without affecting the uplink frequency; green environmental protection, the electromagnetic field strength is far lower than the national standard, and has no effect on the human body. The operation is simple, the antenna is installed correctly, and the power can be automatically operated when the power is turned on.
Installation precautions about desktop gsm jammer: Select the area where you need to cut off the signal of the mobile phone, place the jammer on the desktop or the wall in this area; after the installation is complete, turn on the power of the interferometer and turn on the power switch; after the device is connected, press the power switch disturber You can work. At this time, all the open mobile phones in the scene are in the search network state, and the base station signal is lost, and the calling and the called parties cannot establish the call connection.
Regarding radiation, as long as it is an electronic product, there will be radiation regardless of its size, and any piece of electrical equipment will have radiation. Just like the mobile phone we usually use, it is packed in the pocket every day. It is inevitable that there will be radiation near the ear. The state has also set a standard for mobile phone radiation, and the radiation generated by our gsm signal jammer is far lower than the national standard. So there is almost no harm to the human body.